The expression of the pipe operator | does implicitly replaced by the cmd.exe /S /D /c"..." command

[andry81]

call; & echo 1 | exit 1 && echo true || echo false

The same as:

call; & cmd.exe /S /D /c" echo 1 " | cmd.exe /S /D /c" exit 1 " && echo true || echo false

Result:

false

call; & exit 0 | exit 1 && echo true || echo false

The same as:

call; & cmd.exe /S /D /c" exit 0 " | cmd.exe /S /D /c" exit 1 " && echo true || echo false

Result:

false

call; & echo 1 | (call) && echo true || echo false

The same as:

call; & cmd.exe /S /D /c" echo 1 " | cmd.exe /S /D /c" ( call ) " && echo true || echo false

Result:

true

Note

The (call) expression under the piping | operator has changed the syntax to ( call ) (after ( and before ) a space character is added), which has a different exit code: #14

So, to workaround it you have change (call) to call(rem):

call; & echo 1 | call(rem) && echo true || echo false

Result:

false